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What’s the Matter?
“Materials that Float and
Sink”
Science 4 Quarter 1 Week 1 Day 2
Activity 1:“Floating…Sinking...”
What to Do?
1. Gather all the needed materials for the activity.
2. Measure 1 L of water and put water into the pail or basin.
3. Put the materials one by one into the pail/ basin of water.
4. Observe what happens.
5. Check (√) if the materials float in water or (X) if it sink.
Table 1: “Floating…Sinking...”
Guide Questions:
1. Which of the materials floated in water?
2. Which of the materials sank in water?
3. Does the weight of an object affect its
ability to float?
4. What makes some of the materials float
in water?
What is the difference?
Sink means…
•To fall to the bottom of
water
Float means…
•To stay on top
•Some things float on top of water, some things stay
submerged partway down, and some things sink.
•Some things sink very fast and some things sink very
slowly.
• An object’s shape can affect its ability to float, but some
materials float no matter what their shape – such as
Styrofoam and balsa wood.
• Some things float at first, but then sink as they absorb water
or take water on through holes.
• Why do some people use floaters
(salbabida) in swimming pools?
-People use floaters in
swimming pool to keep them afloat
in water.
• Explain why large boats or ships
float on water.
-Large ships and boats float
on water because the upward
push of the water is greater than
their weights.
• Explain why life vest keep you afloat in
the sea?
-Life vests keeps us afloat in
water because it makes us occupy
a bigger space, increasing the
upward force of the water on us
making us float
Classify materials according to whether they float or
sink in a body of water
FLOAT SINK
SINK SINK FLOAT
FLOAT SINK SINK SINK
Points to Remember:
• Sink means to fall to the bottom of water, float means to
stay on top.
• Some things float on top of water, some things stay
submerged partway down, and some things sink.
• Some things sink fast and some things sink slowly.
• An object’s weight can affect its ability to float, but some
materials float no matter what their weight or size such as
Styrofoam and balsa wood. If the material is less dense
(lighter) than the liquid, it will float.
Directions: Write if the statement is correct and if it is false. Write
your answer on your notebook.
_____ 1. metal spoon floats in water _____ 6. pencil floats in water
_____ 2. stapler sinks in water _____ 7. coins sink in water
_____ 3. chalk floats in water _____ 8. plastic toy boat floats in water
_____ 4. thumbtacks float in water _____ 9. “pingpong” ball sinks in water
_____ 5. plastic saucer floats in water _____ 10. nail sinks in water
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
1. An object should float in a liquid if it is ________.
a. heavy
b. lighter than metal
c. shaped like a ball
d. less dense than the liquid
2. A tiny piece of sand is very light but sinks in water. This is because ______.
a. sand is heavy
b. sand is a solid
c. sand is denser than water
d. there is more water than sand
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
3. A candle floats in water but sinks in alcohol. This is because
a. water is lighter than alcohol
b. water is heavier than alcohol
c. the candle is lighter in alcohol
d. water and alcohol are both liquids
4. A carrot floats in salt water but sinks in fresh water. This is because
a. the carrot is lighter than saltwater
b. fresh water is heavier than saltwater
c. saltwater is heavier than fresh water
d. a large piece of carrot has a different density
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
5. Which of the following materials will float in water?
a. coin
b. stone
c. balloon
d. iron nail
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
1. An object should float in a liquid if it is ________.
a. heavy
b. lighter than metal
c. shaped like a ball
d. less dense than the liquid
2. A tiny piece of sand is very light but sinks in water. This is because ______.
a. sand is heavy
b. sand is a solid
c. sand is denser than water
d. there is more water than sand
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
3. A candle floats in water but sinks in alcohol. This is because
a. water is lighter than alcohol
b. water is heavier than alcohol
c. the candle is lighter in alcohol
d. water and alcohol are both liquids
4. A carrot floats in salt water but sinks in fresh water. This is because
a. the carrot is lighter than saltwater
b. fresh water is heavier than saltwater
c. saltwater is heavier than fresh water
d. a large piece of carrot has a different density
B. Directions: Read each question carefully. Write the letter of the correct
letter on your notebook.
5. Which of the following materials will float in water?
a. coin
b. stone
c. balloon
d. iron nail
Draw 5 objects that float
and 5 objects that sink.
Assignment:

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lesson 2 Float or Sink.pptx

  • 1.
  • 2. What’s the Matter? “Materials that Float and Sink” Science 4 Quarter 1 Week 1 Day 2
  • 3.
  • 4. Activity 1:“Floating…Sinking...” What to Do? 1. Gather all the needed materials for the activity. 2. Measure 1 L of water and put water into the pail or basin. 3. Put the materials one by one into the pail/ basin of water. 4. Observe what happens. 5. Check (√) if the materials float in water or (X) if it sink.
  • 6. Guide Questions: 1. Which of the materials floated in water? 2. Which of the materials sank in water? 3. Does the weight of an object affect its ability to float? 4. What makes some of the materials float in water?
  • 7. What is the difference? Sink means… •To fall to the bottom of water Float means… •To stay on top
  • 8. •Some things float on top of water, some things stay submerged partway down, and some things sink. •Some things sink very fast and some things sink very slowly.
  • 9. • An object’s shape can affect its ability to float, but some materials float no matter what their shape – such as Styrofoam and balsa wood. • Some things float at first, but then sink as they absorb water or take water on through holes.
  • 10. • Why do some people use floaters (salbabida) in swimming pools? -People use floaters in swimming pool to keep them afloat in water.
  • 11. • Explain why large boats or ships float on water. -Large ships and boats float on water because the upward push of the water is greater than their weights.
  • 12. • Explain why life vest keep you afloat in the sea? -Life vests keeps us afloat in water because it makes us occupy a bigger space, increasing the upward force of the water on us making us float
  • 13. Classify materials according to whether they float or sink in a body of water FLOAT SINK SINK SINK FLOAT FLOAT SINK SINK SINK
  • 14. Points to Remember: • Sink means to fall to the bottom of water, float means to stay on top. • Some things float on top of water, some things stay submerged partway down, and some things sink. • Some things sink fast and some things sink slowly. • An object’s weight can affect its ability to float, but some materials float no matter what their weight or size such as Styrofoam and balsa wood. If the material is less dense (lighter) than the liquid, it will float.
  • 15. Directions: Write if the statement is correct and if it is false. Write your answer on your notebook. _____ 1. metal spoon floats in water _____ 6. pencil floats in water _____ 2. stapler sinks in water _____ 7. coins sink in water _____ 3. chalk floats in water _____ 8. plastic toy boat floats in water _____ 4. thumbtacks float in water _____ 9. “pingpong” ball sinks in water _____ 5. plastic saucer floats in water _____ 10. nail sinks in water
  • 16. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 1. An object should float in a liquid if it is ________. a. heavy b. lighter than metal c. shaped like a ball d. less dense than the liquid 2. A tiny piece of sand is very light but sinks in water. This is because ______. a. sand is heavy b. sand is a solid c. sand is denser than water d. there is more water than sand
  • 17. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 3. A candle floats in water but sinks in alcohol. This is because a. water is lighter than alcohol b. water is heavier than alcohol c. the candle is lighter in alcohol d. water and alcohol are both liquids 4. A carrot floats in salt water but sinks in fresh water. This is because a. the carrot is lighter than saltwater b. fresh water is heavier than saltwater c. saltwater is heavier than fresh water d. a large piece of carrot has a different density
  • 18. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 5. Which of the following materials will float in water? a. coin b. stone c. balloon d. iron nail
  • 19. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 1. An object should float in a liquid if it is ________. a. heavy b. lighter than metal c. shaped like a ball d. less dense than the liquid 2. A tiny piece of sand is very light but sinks in water. This is because ______. a. sand is heavy b. sand is a solid c. sand is denser than water d. there is more water than sand
  • 20. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 3. A candle floats in water but sinks in alcohol. This is because a. water is lighter than alcohol b. water is heavier than alcohol c. the candle is lighter in alcohol d. water and alcohol are both liquids 4. A carrot floats in salt water but sinks in fresh water. This is because a. the carrot is lighter than saltwater b. fresh water is heavier than saltwater c. saltwater is heavier than fresh water d. a large piece of carrot has a different density
  • 21. B. Directions: Read each question carefully. Write the letter of the correct letter on your notebook. 5. Which of the following materials will float in water? a. coin b. stone c. balloon d. iron nail
  • 22. Draw 5 objects that float and 5 objects that sink. Assignment: